MAX. IMPURITIES

Loss on ignition...................................................................................2 %

Organic matter...................................................................................... p/t.

Soluble salts................................................................................... 0,25 %

Soluble barium salts (as Ba)......................................................... 0,001 %

Acidity or alkalinity............................................................................... p/t.

Chloride (Cl).................................................................................. 0,001 %

Phosphate (PO4)........................................................................... 0,001 %

Silicate.................................................................................................. p/t.

Sulphide............................................................................................... p/t.

As............................................................................................... 0,0001 %

Cu................................................................................................. 0,001 %

Fe.................................................................................................. 0,001 %

Ni.................................................................................................. 0,001 %

Pb................................................................................................. 0,001 %